<template>
  <div>
    <div class="search">
      <input class="search-input" type="text" placeholder="输入城市的名字或拼音" v-model="keyWord">
    </div>
    <div class="search-content" ref="search" v-show="keyWord">
      <ul>
        <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)"> {{ item.name }}</li>
        <li class="search-item border-bottom" v-show="hasNoData">没有匹配的城市</li>
      </ul>
    </div>
  </div>

</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyWord: '',
      list: [],
      Timer: null
    }
  },
  methods: {
    handleCityClick (city) {
      this.$store.commit('cityChange', city)
      this.$router.push('/')
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  watch: {
    keyWord () {
      if (this.Timer) {
        clearTimeout(this.Timer)
      }
      if (!this.keyWord) {
        this.list = []
        return
      }
      this.Timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyWord) > -1 || value.name.indexOf(this.keyWord) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  }
}
</script>

<style lang="stylus" scoped>
  @import "~styles/variable.styl"
  .search
    height:0.72rem
    padding:0.1rem
    background: $bgColor
    .search-input
      width: 100%
      height:.62rem
      padding:0.01rem
      box-sizing:border-box
      line-height:.62rem
      text-align: center
      border-radius:.06rem
      color: #666
  .search-content
    z-index:1
    overflow:hidden
    position: absolute
    top:1.58rem
    left:0
    right:0
    bottom:0
    .search-item
      line-height:.62rem
      padding-left:0.2rem
      color: #666bac
      background: #fff
</style>
